Gyruff (Grand Duchy of Geoff)
Several strange new magical doors open and close like the iris of the eye and are being called “iris valves”. Most are open, but occasionally are closed. These iris valves require magical power and an ID Card to open when closed. All manual attempts to open a non-powered/locked closed iris valve have failed.
Iris valves can be located in the floor or ceiling, but if they are, they are usually accompanied by a rungs embedded in the wall.